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3 commits

Author SHA1 Message Date
Alex Deucher
fe78118c46 drm/radeon: protect concurrent smc register access with a spinlock 
smc registers are access indirectly via the main mmio aperture, so
there may be problems with concurrent access.  This adds a spinlock
to protect access to this register space.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2013-09-11 11:44:28 -04:00
Alex Deucher
f85392bcf9 drm/radeon: add dpm UVD handling for evergreen/btc asics 
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2013-06-27 19:15:47 -04:00
Alex Deucher
66229b2005 drm/radeon/kms: add dpm support for rv7xx (v4) 
This adds dpm support for rv7xx asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching

Set radeon.dpm=1 to enable.

v2: reduce stack usage
v3: fix 64 bit div
v4: fix state enable

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2013-06-27 19:14:59 -04:00